rossb is sooooooo right, I grow orchids, betcha didn't guess that. While searching for a MH for my room I was very very suprised to find out how quickly light intensity drops off. When a MH bulb is rated for say 40,000lumens, that is how much light is thrown over a 1sqft area 1 foot away from the bulb. At two feet the light will have approx, 1/2 of the intensity, at 3 feet, 1/4, at 4 feet, 1/9th... that is in air, remember water is alot denser than air so ..... anyway.... ross is right, if you can afford the $$$ I would add the other light, just make sure you keep an eye on that brace and see how hot it gets.
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12-18-2002, 04:45 PM
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